I have an MBP with 10.5 and XP on boot camp. The other day, I restarted my computer attempting to load OS X but to no avail. At first I got the apple load screen for an indefinite time, then I forced a restart and it went to a blue screen that flashed every few seconds to a slightly darker blue screen with the loading icon. This doesn't go anywhere either. I used disk utility, fcdsk, and reset the SMU but nothing works. Any ideas?